<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/loose.dtd">
<HTML
><HEAD
><TITLE
>Idle Functions</TITLE
><META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
REL="HOME"
TITLE="GTK+ 2.0 Tutorial"
HREF="book1.html"><LINK
REL="UP"
TITLE="Timeouts, IO and Idle Functions"
HREF="c1761.html"><LINK
REL="PREVIOUS"
TITLE="Monitoring IO"
HREF="x1772.html"><LINK
REL="NEXT"
TITLE="Advanced Event and Signal Handling"
HREF="c1799.html"></HEAD
><BODY
CLASS="SECT1"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>GTK+ 2.0 Tutorial</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="x1772.html"
ACCESSKEY="P"
>&#60;&#60;&#60; Previous</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
>Timeouts, IO and Idle Functions</TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="c1799.html"
ACCESSKEY="N"
>Next &#62;&#62;&#62;</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="SEC-IDLEFUNCTIONS"
>Idle Functions</A
></H1
><P
>What if you have a function which you want to be called when nothing
else is happening ?</P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>gint gtk_idle_add( GtkFunction function,
                   gpointer    data );</PRE
></TD
></TR
></TABLE
><P
>This causes GTK to call the specified function whenever nothing else
is happening.</P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>void gtk_idle_remove( gint tag );</PRE
></TD
></TR
></TABLE
><P
>I won't explain the meaning of the arguments as they follow very much
like the ones above. The function pointed to by the first argument to
gtk_idle_add will be called whenever the opportunity arises. As with
the others, returning FALSE will stop the idle function from being
called.</P
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="x1772.html"
ACCESSKEY="P"
>&#60;&#60;&#60; Previous</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="book1.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="c1799.html"
ACCESSKEY="N"
>Next &#62;&#62;&#62;</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Monitoring IO</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="c1761.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>Advanced Event and Signal Handling</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>